Rotary tooth-brush.



c. L. Demme. nounvmom` anusH. QYILICATHJNl FILED SEPT. 12. |911.

INVENTOB WITNEssEs Patented Sept. 24, 1918.

41li having a cut-awayV portion through 'which part of the brush projects.

UNITED STATES PATENT OFFICE.

cmFroN L. nonLANn, or s'rm'rronn, cNTAnIo, cursus.

no'rnmz Toorn-nacen.

Application led September 12, 1817. Serial No. 191,082.

To all whom it may concern:

Be it known that' I, CLIrroN L. Dominio,

"a subject ofthe King of England, residing at Stratford, in the Province of Ontario and Dominion 4of Canada, have invented new and useful Improvements inRotary Tooth- Brushes,l of which s iication.

f IOvde a hand the following is a speci- This inventionrelates to new and ,useful improvements in tooth brushes7 and the principal object of the invention is to provide `a circular brush with means for giving it a Vrotary motion. A

Another object ofthe invention is to provide a casing.' for inclosing the brush but -A further ob'ect 'of the invention is to l e part connected with the rush and combining with means for rotating the same and including means for disenga ing .the parts.

nother object of the invention is toV ro 4vide a device of this character whic 1s 'simple and-'durable in construction, reliable c and eilicient in operation and one which can i ket at a minimum cost.

u n 1 combmatlon and arrane bje manufactured and .placed upon the mar'- [Thel invention also consistsQin certain other features of `construction and in the ement of the several arts, to be. herenar fully described, illustrated in the vaccompanying drawings and'specificallypointed out in the appended Iclaims. 'A

Indescribing-my'invention in detail, ref- .erence will be hadl to the accomp nyng drawings 'wherein like characters enote like orcorresponding parts throughout the 40 several views, 'and in which:-

`Figure 1 is aside velevation with the parte broken away. l

Fig. 2 is al1-end view. 1 Fig. 3- isaI crosssection on line 3-3 of ig.- 4 is aside view of the bl'llsh head.

Fig'. 5 isa detail of one of the disks.

-I In these views 1 indicates the casing preferably of cylindrical-shape and having its 50,1"y i I lower part 'cut-away as at 2 and exposing .,591 thebrstles 3. f The outer end of said casing is provided with a depression 4 for receiving the end ofthe shaft 5 on which the brush head 6 is mounted. the other end of saidshaft bein supported in the manner to be hareina r described. The brush Specification of Letters Patent.

`bein Ivvhi'i 4 prevents the stem from entering too far into van opening in one end thereof to engl f sterilY passes throug Patented sept. e4, 191s.

head `is composed of the rings of bristles 3 which are supported by the disks 7;.

parts being secured together in" any desired manuel'. The inner end of the casing is closed by a removable disk-8 which is ro vided with a flange 9 fittin in the en .of the casing and` removably eld therein by means of the notches 10. Said disk.` is pro-- vided with 'an opening 11 through which the stem-12 of the handle 13 passes, said stem provided with an lenlargement 14 engages the outer face of the disk auf the casing. A cylindrical member 15 has e the end of the stem 12 and a screw said stem within the opening. The `other end of the member lis provided with a bayonetslo't 17 whichrecelves a transverse pin 5' in the end of the shaft 5. The 12 is provided with spiral ribs18 and said a plate 19 secured to the'gnd of the han "with a. recess for receiving the said stem. ,Said plate is rovidedlwith grooves foren- .gagln the n s vso that when `the stein is move with relation to-the .plate saidvijgribs will cause' the'stemto rotate. The end of 4the easing is providedwith corngations 21 for forming a hand-hold lwhenthe brush-"is being used. And'to' prevent the of olds e 13 which is provided y the casing from injuring the lips I'bend` said'edges inwardly as at 22A.A

When the brush is ,to be used the casing is held with one hand with' the projecting Eartof the brush against'v the teeth. The

andle is then grasped by the other hand and moved 4longitudinali in both directions so that the stem is for A,in and o V of said handle whereby the ribs 4thereon with .the grooves in plate 19 will danse the The brush may beeasily cleaned without removing the stem from the casing `as the through the cut away portion therein' the' device this may be easilvandI quickly done by removing the disk 8 so as to sepa. rate thebrush from the stem whereby said.

brush may be removed from the casing.

It is thought from the foregoing descripstem to rotate andthus rotate thebrush.

roe

tion that the advantages and novel features of my invention will be readil -a parent.

I .desire it to be undemood at I may make slight changes infthe vconst'rlalction -neV 10o" cleansing water has free access to the cas- 111g but if it is desired to separate the parts o ing and in the combination and arrangement of theseveral parts, provided that lsuch changes 4fsll within the scope of the appended claims.

l. A tooth brush cmnynising :i casing' having an openin therein, a brush head r0- tatably Supporte, in Said casing, :i removable disk closing one end of Said casing, :i handle having :l Stem pimiing through. Said disk, a. member' detnchahiy connecting Said stem with the brush, and means for rotatthe brush by a longitudinal movement of the handle.

2. A toothlbrushcomprising :i casing hfwingn opening therein,.a brush head hay-'mg one .end journaled in the1 end of the. casing, a. member detachhly connected wih th other` endof the brush head, :i removzii n disk closing 011e end of said casing, a handc having a stem passing through said disk.y means for detachablynonnecting the end 01 Suid stem-'with said member and riieans for rotating the brush by a.l longitudinfil` movement the handle,

In testimony whereof I ix my signature.

. 4 CLIFTON L. DORLAND. Witnesses: GEO. R.l FAIRHEAD,

P. H. SCOTT. 

